CommandType can be one of the following values: Text, TableDirect.
When the value is CommandType.Text, the property CommandText should contain text of a query that must be run on the server.
When the value is set to TableDirect, CommandText must be name of a table you want to get all data from. All rows and columns are retrieved.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2